JP2002194840A - Outer wall structure of soundproof room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promote weight reduction and thinning of the whole outer wall while improving sound insulating performance. SOLUTION: A wall panel 10 comprises a first sound insulating layer 12 arranged on the outdoor side, a second sound insulating layer 13 arranged on the indoor side, and an air layer 16 arranged between these first and second sound insulating layers 12 and 13. The first sound insulating layer 12 is composed of a metallic plate 18 revealed on the outdoor side, and an outside sound insulating plate 19 attached inside the metallic plate 18. The second sound insulating layer 13 is composed of an inside sound insulating plate 24 arranged in the almost same surface density as the first sound insulating layer 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall structure of a soundproof room, and more particularly, to an outer wall structure of a soundproof wall or a soundproof ceiling capable of promoting sound weight reduction and thinning of the entire outer wall while improving sound insulating performance. About.

[0002]

2. Description of the Related Art For example, a wall panel 50 as shown in FIG. 3 is used as an outer wall of a conventional outdoor installation type soundproof room. The wall panel 50 has a configuration in which a second sound insulation layer 54 is provided on a first sound insulation layer 52 located on the outdoor side on the left side in FIG. 3 via an air layer 53 containing a sound absorbing material G. The first and second sound insulation layers 52 and 54 are provided in mutually different layer structures in consideration of the difference between indoor and outdoor natural environments, and the first sound insulation layer 52 is made of a decorative steel plate or the like serving as an exterior plate. On the other hand, the second sound insulation layer 54 is formed by bonding a sound insulation plate 54B such as a gypsum cement board or a fiber-mixed slag to a sound insulation plate 54A such as a gypsum board disposed on the air layer 53 side. ing. A core member 57 extending in both the vertical and horizontal directions of the panel is provided at a predetermined position between the first and second sound insulation layers 52 and 54.

[0003]

However, in the wall panel 50, when the overall thickness and weight are set within a practical range, the resonance transmission frequency is set to less than 125 Hz which is desired in terms of sound insulation performance. It is difficult to do. Therefore, the wall panel 50 has a resonance transmission frequency of 125.
In order to improve the sound insulation performance below Hz,
Its thickness and weight must be further increased, which is a factor that hinders the weight reduction and thinning of the wall panel 50.

[0004]

SUMMARY OF THE INVENTION The present invention was devised in view of such inconveniences, and an object of the present invention is to provide a soundproof device capable of improving the sound insulation performance and promoting a reduction in the weight and thickness of the entire outer wall. It is to provide an outer wall structure of a wall.

[0005]

To achieve the above object, the present invention relates to an outer wall structure of a soundproof room having an air layer provided between a first and a second sound insulating layer formed of a predetermined plate. The first sound insulation layer includes an exterior plate located on the outdoor side and an outer sound insulation plate attached to the inside of the exterior plate, and the second sound insulation layer has a surface density of First
The configuration is such that it is set to be substantially the same as the sound insulation layer. With such a configuration, it is possible to lower the resonance transmission frequency in a state where the thickness and weight of the entire outer wall are substantially equal to those of the conventional outer wall structure, and to reduce the weight and thickness of the entire outer wall while improving the sound insulation performance. Can be promoted.

[0006]

In the present invention, an intermediate sound insulating plate may be interposed between the first and second sound insulating layers. With this configuration, the sound insulation performance of the outer wall can be further improved.

[0007] The exterior plate includes a concave portion that protrudes outward from a core material interposed between the first and second sound insulating layers, and the outer sound insulating plate is housed in the concave portion. It is also possible to adopt a configuration. According to such a configuration, the exterior plate is easily fixed to the core material, and the waterproof caulking agent is easily filled.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial longitudinal sectional view (or a transverse sectional view) of an embodiment in which the present invention is applied to a wall panel of a soundproof room. In this figure, a wall panel 10 includes a first sound insulation layer 12 arranged on the outdoor side (left side in FIG. 1), a second sound insulation layer 13 arranged on the indoor side (right side in FIG. 1), A plurality of core members 15 interposed between the first and second sound insulation layers 12 and 13 and extending along both the vertical and horizontal directions of the panel (the vertical direction in FIG. 1 and the direction perpendicular to the paper surface); And a space surrounded by the second sound insulation layers 12 and 13 and the core material 15, that is, an air layer 16.

The first sound insulating layer 12 is composed of a metal plate 18 as an exterior plate exposed outside and an outer sound insulating plate 19 provided inside the metal plate 18. The metal plate 18 is formed in a bottomed dish shape by a decorative steel plate, a decorative stainless steel plate, a decorative aluminum plate, or the like.
9 is provided, and includes a mounting surface portion 22 which extends in a vertical direction in the figure from the open side of the concave portion 21 and serves as a margin for fixing to the core material 15. In this embodiment, the metal plate 18 has a thickness of 0.1 mm.
An 8 mm decorative steel plate is used. This metal plate 18
Is fixed to the core material 15 with the screw 23 so that the open side of the concave portion 21 is located on the indoor side, so that the metal plate 18 is attached across the adjacent core materials 15, 15. , The concave portion 21 projects outward from the core material 15. In addition, as shown in the case of the second core 15 from the top in FIG. 1, each of the mounting surfaces 22 of the adjacent metal plates 18 overlaps with the core 15 disposed other than the end of the panel. The area fixed in the state and seen to be recessed from the outside can be subjected to a waterproofing process of filling the caulking agent 25.

The outer sound insulating plate 19 is formed in a substantially flat shape by a gypsum board, a calcical board, a plywood, an MDF, a particle board or the like. In the present embodiment, the thickness is 9.5 m.
m of gypsum board is used.

The second sound insulating layer 13 is provided in a different layer structure from the first sound insulating layer 12 in consideration of the difference in the natural environment inside and outside the soundproof room. In this embodiment, the first sound insulating layer 12
Flat inner sound insulation plate 24 set to have approximately the same surface density as
In a single-layer structure. This inner sound insulation plate 2
Examples of gypsum board 7 include gypsum board, fiber-mixed slag gypsum cement board, cical board, plywood, MDF, particle board, and the like. In the present embodiment, a fiber-mixed slag gypsum cement board having a thickness of 12 mm is used. Also,
The inner sound insulating plate 27 is fixed to the core material 15 by screws 29. The second sound-insulating layer 13 may have a multi-layered structure using a plurality of plates of the same or different materials in addition to a single-layered structure. For example, the second sound-insulating layer 13 may be formed using two plasterboards. It is also possible.

Although the air layer 16 is not particularly limited, in the present embodiment, its thickness is about 40 mm.
, And a sound absorbing material 31 such as glass wool, rock wool, or the like is arranged inside.

Experiments on the sound insulation performance of the wall panel 10 having the above-described configuration and the above-described conventional wall panel 50 (see FIG. 3) were performed, and the following results were obtained. Here, the wall panel 50 of the conventional example has the metal plate 52.
As A, a material having substantially the same material and thickness as the metal plate 18 of the present embodiment is used, and as the sound insulating plates 54A and 54B, substantially the same material as the outer sound insulating plate 19 and the inner sound insulating plate 27 of the present embodiment, respectively. And one having a thickness. The air layer 53 was set to have substantially the same thickness as the air layer 16 of the present embodiment, and the wall panel 50 was set to have the same size and weight as the wall panel 10.

When the sound transmission loss (TL) of each of the wall panels 10 and 50 was measured, the value at 125 Hz was improved by 3 dB with the wall panel 10 of the present embodiment compared with the wall panel 50 of the conventional example. It became.

According to such experimental results, the wall panel 10 of the present embodiment can have a lower resonance transmission frequency than the conventional wall panel 50 having substantially the same overall size and weight, and furthermore, has a sound insulation. The frequency is set to 125 Hz or less which is desired for performance. Here, in order to reduce the resonance transmission frequency of the conventional wall panel 50 to 125 Hz or less, it is necessary to increase the overall thickness and weight of the wall panel 50 compared to the wall panel 10 of the present embodiment. In other words, when the sound insulation performance of the wall panels 10 and 50 is substantially the same, it is clearly understood that the wall panel 10 of the present embodiment is lighter or thinner than the wall panel 50 of the conventional example. I can do it. Therefore, according to the present embodiment, it is possible to obtain an effect that the weight and thickness of the panel can be promoted while improving the sound insulation performance.

Note that, as shown in FIG.
An intermediate sound insulation plate 33 such as a gypsum board can be interposed between the core material 15 and the core material 15 and between the core material 15 and the inner sound insulation plate 27. In such a case, the weight of the wall panel 10 increases. However, the sound insulation performance can be improved as compared with the case where the same intermediate sound insulation plate 33 is interposed in the conventional wall panel 50.
When the intermediate sound insulating plate 33 is interposed between the metal plate 18 and the core material 15 or only one of the core material 15 and the inner sound insulating plate 27, the first and second sound insulating layers 12 and 13 In addition, the sound insulation performance can be improved by interposing in the smaller area density than by interposing in the larger area density.

[0018]

As described above, according to the present invention,
The first sound insulation layer includes an exterior plate located on the outdoor side, and an outer sound insulation plate attached to the inside of the exterior plate, and a first sound insulation layer provided on the first sound insulation layer via an air layer. (2) Since the surface density of the sound insulation layer is set to be substantially the same as that of the first sound insulation layer, the resonance transmission frequency can be reduced even if the thickness and weight of the entire outer wall are substantially the same as those of the prior art, which is more advantageous in sound insulation performance. Becomes

Further, since an intermediate sound insulating plate is interposed between the first and second sound insulating layers, the sound insulating performance of the outer wall can be further improved.

[0020] Further, the exterior plate has a concave portion that extends outward from a core material interposed between the first and second sound insulating layers, and the outer sound insulating plate is accommodated in the concave portion.
When the exterior plate is fixed with screws, the amount of screwing is small, and the exterior plate can be easily attached.
It becomes easy to fill the waterproof caulking agent.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view (or a transverse sectional view) of a wall panel according to an embodiment.

FIG. 2 is a partial longitudinal sectional view (or a transverse sectional view) of a wall panel according to a modification.

FIG. 3 is a partial longitudinal sectional view (or a transverse sectional view) of a wall panel according to a conventional example.

[Explanation of symbols]

10: wall panel (outer wall), 12: first sound insulation layer,
13 ... second sound insulation layer, 15 ... core material, 16 ... air layer, 18 ... metal plate (exterior plate), 19 ... outer sound insulation plate, 21 ... recess, 33 ... ..Intermediate sound insulation plates

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E001 DA01 DF05 FA04 FA14 GA42 HA03 HA21 HA32 HB02 HB03 HB04 HC02 HC04 HE07 KA04 KA07 LA01 MA03 2E002 FA02 FB05 FB07 HA02 HB01 MA18

Claims (3)

[Claims] 1. An outer wall structure of a soundproof room in which an air layer is provided between first and second sound insulating layers formed of a predetermined plate material, wherein the first sound insulating layer is an exterior member located on the outdoor side. A plate and an outer sound insulating plate provided inside the outer plate, wherein the second sound insulating layer has a surface density substantially equal to that of the first sound insulating layer. The exterior wall structure of the soundproof room. 2. The outer wall structure of a soundproof room according to claim 1, wherein an intermediate sound insulating plate is interposed between said first and second sound insulating layers. 3. The exterior plate includes a concave portion that projects outward from a core material interposed between the first and second sound insulating layers, and the outer sound insulating plate is accommodated in the concave portion. The outer wall structure of a soundproof room according to claim 1 or 2, wherein: